Directing copper-free molecular relay for photoreduction of CO2 to ethanol
Directing copper-free molecular relay for photoreduction of CO2 to ethanol
研究概述
通过酰胺键将Ni修饰氮化碳与铁酞菁连接，构筑无Cu分子接力光催化体系。Ni位点生成CO，Fe位点捕获并转为*CHO，电子互补的*CO/*CHO促进不对称C—C偶联；CO2与纯水、无牺牲剂条件下乙醇选择性90.47%。
谱图与表征信息
Fig. 2. Atomic structure and coordination state analysis of Ni-Fe catalyst. (a) Ni K-edge XANES spectra of Ni-Fe with reference samples of Ni foil, NiO, and Ni2O3. (b) The mean chemical valence of Nin+ species in Ni-Fe. (c) Ni K-edge XANES spectra of Ni foil, NiO, Ni2O3, and Ni-Fe and its corresponding fitting curve of Ni-Fe. (d) Ni K-edge WT-EXAFS plots of Ni-Fe, Ni foil, Ni2O3, and NiO. (e) Fe K-edge XANES spectra of Ni-Fe and the reference samples of Fe foil, Fe3O4, and Fe2O3. (f) The mean chemical valence of Fen+ species in Ni-Fe. (g) Fe K-edge XANES spectra of Fe foil, Fe3O4, Fe2O3 and Ni-Fe and its corresponding fitting curve of Ni-Fe. (h) Fe K-edge WT-EXAFS plots of Ni-Fe, Fe foil, Fe2O3, and Fe3O4.